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What else can I help you with?
What is ultraviolet water disinfection?
Ultraviolet (UV) light kills bacteria and viruses in water. The light shines through the water, which must be clear. It does not add a scent or taste to the water.
For us to see something light from it must enter our?
It must enter our eyes.
How does welding damage eye sight?
An electric welding arc produces ultraviolet light and the UV light will damage the retina. With a good welding helmet, your eyes will be protected, but you must have the proper shade (somewhere between 9 and 14 depending on your amperage) and if using an auto-darkening helmet, it must switch on quickly. (1/25000 of a second)
What 3 things must happen to be able to see something?
1. there mush be a source of light 2.the light must strike an object 3.the light must be reflected from the object to your eye
How you convert other rays into visual rays?
If you mean how to convert energy (such as from the sun) that is not visible into visible light; the energy (photons) must interact with something that converts them. For example fluorescent materials (those bright "Dayglow" vests that road workers wear so that they will be seen) convert a portion of the ultraviolet (wavelengths of light that are too short and energetic to be seen with our eyes)into visible light. There are some advanced special materials that can convert infra red (wavelengths of light that are too long to be seen with our eyes)into visible but they are uncommon and expensive.
What must happen a substance to appear black what must happen to all wavelengths of light?
A substance that appears black (in a lighted room) is absorbing all of the visible light that hits it, leaving no visible light to reflect off of it to your eye. So it's absorbing visible light of all wavelengths. (You still don't know what's happening to the infra-red or ultraviolet hitting it. For that, you need to use different detectors.)
How do you get the mirror shield?
First you must get your iron shield from the Gorons, and then play The Legend of Zelda Oracle of Ages to get the secret for The Mirror Shield.
What substance to appear white what must happen to all wavelengths of light?
must be reflected
What must light do so that you can see something?
When light falls on some object, then it absorbs all the colors of visible light spectrum except the color of the object itself which it reflects back (diffusion). So we see the color of the object .
How do you see things?
how do we see things?...There must be a light source that strikes or shines on the object and reflects and to reach your eyes..,
Why cant you use visible light to see molecules?
because light used to see an object must have a wavelength
What color is being reflected to our eyes when we see a red apple?
We see red when red light reaches the retinas in our eyes. A non-luminous object that looks red is absorbing every color of light that hits it except red light, which it reflects.
